Regarding the imaging workflow, I think more or less a common
methodology (setting black point, 'neutral'scan, then Photoshop) has
emerged, except some prefer grayscale and some prefer RGB + desaturate.
Regarding wet mounting, I'll see what I can do :-). Thank you so much
for giving me the opportunity to learn all these things.
Ludovico Fischer
On Wed, 2007-11-14 at 10:04 -0500, Richard Frederickson [Contr] wrote:
> Ludovico,
> Unless you have scratched negs, as noted, there are much better
> alternatives to gel.
>
> The scanner I use is an Imacon Flextight 949 (the current model is a
> Hasselblad X5). I scan EM negatives here, which have a very high
> dynamic range and can be quite grainy. This scanner's dynamic range
> exceeds the densest negative I've come across (including some
> bullet-proof WWWII era b&w negs).
>
> The Flextight system uses a flexible holder that bends the film as
> it's being scanned--this way the film is always flat at the optical
> axis. There is no need for oil or gel since no glass comes in contact
> with the film.
>
> For black and white negatives, I scan to 16-bit grayscale TIFF and
> include the ICC profile. Most often, I just set the white point and
> black point (a white point to maintain at least a 2-3% highlight dot
> and a black point to avoid clipping in the shadows). Any image
> adjustments are then performed in Photoshop using layers.
>
> Hope this is helpful,
> Richard
>
> Richard Frederickson [Contractor]
> Senior Technical Specialist
> Scientific Publications, Graphics & Media (SPGM)
> SAIC-Frederick, Inc.
> National Cancer Institute at Frederick
> Frederick, MD 21702-1201
> (301) 846-1546
>
> Visit us at http://web.ncifcrf.gov/spgm
>
>
>
> >With all regards to Martin, I doubt that there are many professional
> >scanner operators who have used oil in the last 10 years. When KAMI
> >introduced its Scanner Mounting Fluid it did not make sense anymore
> >to deal with the mess of the oil. The fluid is probably related to
> >film cleaner, in that it is thin and evaporates quickly once
> >dismounted, but it's a different beast, because straight film
> >cleaner would damage the acrylic drums that are used on scanners.
> >You can usually obtain some from your local pre-press supplier, or
> >try this website: http://tinyurl.com/ybsuth
> >
> >Liquid mounts for scanning film have been used for many years. The
> >advantages that Martin describes are very real. However, the only
> >time oil is still used is for heavily, deeply scratched film, where
> >the oil fills in the scratches better than the thin mounting fluid.
> >But even there, KAMI supplies a gel that is easier to clean up than
> >oil. The basic technique is as follows: tape the film to the bed or
> >the drum, with one side free to lift up. Cut a piece of clear mylar
> >(AGFA C-42 is best) 3 times larger than the film, and tape it down
> >over the film, with one end free again. Pour scanner mounting fluid
> >under the film, over the film while holding the mylar, then bring
> >the mylar overlay down onto the film and the bed. Squeeze out any
> >air bubbles with a clean cloth, then tape all sides of the mylar to
> >seal the mount. It's best to use KAMI tape as well, since it does
> >not dissolve into a gooey mess like regular Scotch tape, but you can
> >manage without it.
> >
> >Chris Protopapas
> >************
> >email@hidden
> >Fuel Digital Inc.
> >902 Broadway, 11th Floor
> >New York, NY 10010
> >P 212-564-4646 F 212-564-2131
> >www.fueldigitalinc.com
> >
> >
> >>WOW! I had never heard of this tecnique. I'm afraid I don't understand.
> >>Do the negs have to be floating in film cleaner WHILE I scan them? How
> >>is that achieved? Or just before and THEN covered with foil? Do you know
> >>of a place or a book where I could learn about this? You're really
> >>telling me something here.
> >>
> >>Ludovico Fischer
> >>
> >
> >
> >
> >
> >
> >
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